package com.ndx.controller;

import com.ndx.pojo.Result;
import com.ndx.pojo.User;
import com.ndx.service.UserService;
import com.ndx.utils.JwtUtil;
import com.ndx.utils.Md5Util;
import com.ndx.utils.ThreadLocalUtil;
import jakarta.validation.constraints.Pattern;
import org.hibernate.validator.constraints.URL;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.core.ValueOperations;
import org.springframework.util.StringUtils;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;

import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;

@RestController
@RequestMapping("/user")
@Validated
public class UserController {
    @Autowired
    private UserService userService;
    @Autowired
    private StringRedisTemplate stringRedisTemplate;

    @PostMapping("/register")
    public Result register(@Pattern(regexp = "^\\S{5,16}$") String username, @Pattern(regexp = "^\\S{5,16}$") String password) {
//        查询用户
        System.out.println("chaxun");
        System.out.println(username);
        System.out.println(password);
        User user = userService.findByUserName(username);
        System.out.println(user);
        //        注册
        if (user == null) {
//           用户名没有占用
            userService.register(username, password);
            return Result.success();
        } else {
//            用户名已经被占用了
            return Result.error("用户名已被占用");
        }

    }

    @PostMapping("/login")
    public Result<String> login(@Pattern(regexp = "^\\S{5,16}$") String username, @Pattern(regexp = "^\\S{5,16}$") String password) {
//根据用户名查询用户
        User loginUser = userService.findByUserName(username);
//判断用户名是否存在
        if (loginUser == null) {
            return Result.error("用户名不存在");

        }
//        判断密码是否正确 loginUser对象中的password是密文
        if (Md5Util.getMD5String(password).equals(loginUser.getPassword())) {
//            登录成功
            ValueOperations<String, String> opsForValue = stringRedisTemplate.opsForValue();
            Map<String, Object> claims = new HashMap<>();
            claims.put("id", loginUser.getId());
            claims.put("username", loginUser.getUsername());
            String token = JwtUtil.genToken(claims);
            opsForValue.set(token, token, 24, TimeUnit.HOURS);
            return Result.success(token);
        }
        return Result.error("密码错误");
    }

    @GetMapping("/userInfo")
    public Result<User> userInfo(/*@RequestHeader(name = "Authorization") String token*/) {
//        Map<String, Object> stringObjectMap = JwtUtil.parseToken(token);
//        String username = (String) stringObjectMap.get("username");
        Map<String, Object> map = ThreadLocalUtil.get();
        String username = map.get("username").toString();
        User user = userService.findByUserName(username);
//        System.out.println(user);
        return Result.success(user);
    }

    @PutMapping("/update")
    public Result update(@RequestBody @Validated User user) {
        userService.update(user);
        return Result.success();
    }

    @PatchMapping("/updateAvatar")
    public Result updateAvatar(@RequestParam @URL String avatarUrl) {
        Map<String, Object> map = ThreadLocalUtil.get();
        Integer id = (Integer) map.get("id");
        userService.updateAvatar(avatarUrl, id);
        return Result.success();
    }

    @PatchMapping("/updatePwd")
    public Result updatePwd(@RequestBody Map<String, String> params, @RequestHeader("Authorization") String token) {
        //1.校验参数
        String oldPwd = params.get("old_pwd");
        String newPwd = params.get("new_pwd");
        String rePwd = params.get("re_pwd");
        if (!StringUtils.hasLength(oldPwd) || !StringUtils.hasLength(newPwd) || !StringUtils.hasLength(rePwd)) {
            return Result.error("缺少必要的参数");
        }
        Map<String, String> map = ThreadLocalUtil.get();
        String username = map.get("username");
        User loginUser = userService.findByUserName(username);
        if (!loginUser.getPassword().equals(Md5Util.getMD5String(oldPwd))) {
            return Result.error("原密码填写不正确");
        }
        //new和re 是否相同
        if (!rePwd.equals(newPwd)) {
            return Result.error("两次填写的密码不一样");
        }
        // 调用service完成密码更新
        userService.updatePwd(newPwd);
        System.out.println("执行完成");
        //删除对应的token
        ValueOperations<String, String> opsForValue = stringRedisTemplate.opsForValue();
        opsForValue.getOperations().delete(token);
        return Result.success();
    }
}
